 Langlois considered that he had purchased but the total area is nearer .At the time of the execution of the deed, Captain Cécille subsequently and enthusiastically hoisted the French flag on shore and issued a declaration of French sovereignty over Banks Peninsula.At the end of the 1838 whaling season Langlois left New Zealand waters, and on arriving in France some time after June 1839, set to work to market the property which he had bought from the Māori.